was doing some pondering for a 30 cal rimmed for a martini.So ran a 360 DW case into the 300 die and it shaped up kinda purddy
so in effect basically a 300 BO rimmed .Chambered the 30 cal barrel with the BO reamer ,cut the relief for the rim and installed on the lil martini .Did some test firing today for function using BO data and she functioned flawless
made a file trim die to size the brass
seems to be nothing new but a fun project to do in the cold ,will mount scope and test for effect when it warms up some
neat project and no need for special reamer nor dies .